Artery puncture device

A technique of arterial puncture and pulse, applied in the direction of puncture needle, puncture needle, cardiac catheter, etc., can solve the problems of sticking to the wall, failure of catheter placement, failure of catheter placement, etc.

CN114587526APending Publication Date: 2022-06-07南华大学附属第二医院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-06-07

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Abstract

The invention provides an artery puncture device, and belongs to the technical field of medical instruments. The artery puncture device comprises an artery puncture needle, the artery puncture needle comprises a needle core and a sleeve, the needle core is sleeved with the sleeve, and the artery puncture device further comprises a guide wire and an infrared pulse sensor. The strongest arterial pulse point is sensed through the infrared pulse sensor, optical signals are converted into electric signals, and the intensity of the electric signals is indicated through the assembly for indicating the intensity of the optical signals to reflect the intensity of pulses. When the arterial puncture device is used, infrared light positioning can be achieved only by connecting the magnetic sheet at the bottom of the infrared pulse sensor with the magnetic patch at the needle body part of the puncture needle. After a puncture point is determined, a needle is inserted, a guide wire is fed when blood return exists in a needle core, and whether a cannula can be inserted or not is confirmed by confirming whether the guide wire is fed smoothly or not. According to the artery puncture device, a puncture point can be accurately positioned, the cannula can be smoothly arranged, and the success rate of first puncture and the success rate of puncture of special patients can be increased.
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Description

technical field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an arterial puncture device. Background technique

[0002] Arterial pressure (ABP) or blood pressure monitoring is the most basic circulatory monitoring project and the simplest cardiovascular monitoring project. It can reflect cardiac output and total peripheral vascular resistance, and is also related to factors such as blood volume, vascular wall elasticity, and blood viscosity. It can be divided into non-invasive arterial pressure monitoring and invasive arterial pressure monitoring. Among them, invasive arterial blood pressure monitoring can instantly and accurately reflect the changes in hemodynamics, and it is convenient to repeatedly collect arterial blood, and is widely used in the monitoring of vital signs of critically ill patients during the perioperative period. The most important aspect of arterial puncture is puncture site location and cannula...

Examples

Embodiment 1

[0052] Embodiment 1: as figure 2 An arterial puncture needle is shown, including a needle core 1, a guide wire 6 in the needle core, and a cannula 2 sleeved on the outside of the needle core. The needle core 1 is a hollow structure, which is slightly longer than the needle sheath 2 by 0.1 ~0.2 cm, the guide wire 6 is fixed in the cavity of the needle core through the one-way valve 8, and the valve 8 is preferably made of sterile silicone rubber, which plays the role of fixing the guide wire 6 and preventing the backflow of blood. The end of the needle core 1 away from the needle 3 is fixed with a handle 4, and the needle core between the needle cover 2 and the handle 4 is provided with a transparent groove 9 for observing the return of blood. After the blood is returned, the guide wire can be sent. The body length of the needle core 1 is 4-5cm, the outer diameter of the hollow structure is 0.12-0.15cm, the inner diameter is 0.04-0.06cm, most preferably 0.048cm, and the mater...

Embodiment 2

[0053] Embodiment 2: as image 3 The infrared pulse sensor shown is a rectangular parallelepiped with a size of 1 × 2 cm, powered by a button battery, and there are two magnetic sheets 21 on the bottom side with a diameter of 1 cm, which are suitable for the magnetic stickers 5; there are 5 indicator lights on the top. twenty two. like Figure 5 The connection method of the indicator light 22 is shown, in which R1 is the sampling resistor, which can convert the current into voltage, R2~R6 are the current limiting (protection) resistors, U is the total circuit voltage, preferably 3V; U1~U5 are The voltage shared by the two ends of each parallel branch circuit indicator light is preset with different voltage values ​​U1>U2>U3>U4>U5 through the sliding rheostat, preferably U1=2.20V; U2=2.05V; U3=1.90V; U4 = 1.75V; U5 = 1.60V. According to this connection method, the stronger the current signal, the more the number of indicator lights, and the easier the indicator light on the ...